Vaporizing device for internal-combustion engines.



No. 878,932. PATENTED FEB. 11, 1908. P. W. BRADY.

VAPORIZING DEVICE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED we. 22. 1904.

3 SHEETS-SHEET 1.

3 a #L 2 2 ll O 0 L0 n o o- O a i gwml m 1 r "w e a; a W .N o 1 JWHHH wvcu l'oz No. 878,932. PATENTED FEB. 11, 1908 F. W. BRADY. VAPORIZING DEVICE FOR-INTERNAL COMBUSTION ENGINES.

APPLICATION FILED AUG. 22. 1904.

3 SHEETS-SHEET 2.

(311 we uloz No. 878,932. PATENTED PEB.11, 1908.

F. W. BRADY. VAPORIZING DEVICE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED AUG. 22 1904.

3 SHEETSSHEET 3.

. $22- 4 WV. pa 2 2% l'ncoap To all whom it may UNITED STATES PATENT OFFICE.

FRANCISWI BRADY, or ENeLEwoon, NEW mnsnv. vsromzma DIVIOI I'OB mun-consumes nmnms.

in. mm.

Specification of Letters Patent.

Patented Feb. 11, 1003.

Application M August 22. 190- Serial Io. mun.

concern:

Be it known that I, Fnnwors W. Baxnr,

resi -at Englewood in the county of Ber- I 11 an State of New ersey, a citizen of the nited States, have invented certain newand useful Improvements in vaporizing Devices for Internal-Combustion Engines, of which the following is aspecification.

This invention relates to vaporizing devices for that class of internal combustion or explosive engines wherein the heavy hydrocarbon oil employed in producing the explosive charge, is vaporized by heat before its admission to the combustion chamber of the engine, and the object of the present invention is to improve such vaporizing devices so that a measured quantity of hydrocarbon oil is fed to, and vaporized by the vaporizer at intervals, such measured quantity of oil being sufiicient when vaporized, to supply a cha e for the engine; and so that clogging 0 the va rizer, premature vaporization and after rip of the oil is prevented. To this end my vaporizing device is so construoted that a measured quantity of oil is forcibly projected onto a heated vaporizing surface at intervals and after each projection of the oil, a back draft is created thro h the oil feed port and the oil in the feed pipe is withdrawn from proximity thereto. In order that my invention may be clearly understood I have illustrated and described .it in connection with a combustion engine ingthe a plication of t e invention to an engme. igs. 3 to 6 are views of the vaporizer; Fig; 3 being a longitudinal axial section; 4 a plan; Fig. 5 a cross-section at x in Fig. 3, and Fig. 6 an end view. Fig. 7-

is an enlarged sectional view of the device for supplying the liquid to the vaporizer.

Fig. 8 1s a view showing the eccentric which 1iperates. the liquid-supplying mechanism.

1g. 9 is an enlarged view of the device for regulat' the extent of movement of the vapor-v ve of the vaporizer; and Fig. 10 is an 1end view of thasame as sefin from theleft in ig.9. .ll-isaviews owm' gameans for varying jl s cut-oil in the liquid-supply err-ing p y to ige. 1 2'-'1 designates the-bed-plate of the engine; 2 the main shaft; 3 the'cam-shaft, driven b suitable gears from the main shaft at one alf of the speed of the latter; 4. the engine cylinder 5 the combustion chamber; 6-the air inlet; the v rizer. as a whole; S the means for supplyi the combustible liquid to the va rizer, an Rthemeans for regulating-thev ve which admits the vapor to the combustion chamber of the engine.

The vaporizer, as shown in Figs. 3 to 6, is

elongated and nearlycylindrical, vided by a partition 8, into an upper vaporizing chamber 9, and a lower flue 10, for the hot products of combustion from the'engine. The partition8is depressed at its middle part as clearly shown in Fi 3, to form a sort of tray or receptacle for t e liquid hydrocarbon which enters at an inlet 11, from a pipe 12. The vapor passes off at an outlet 13, and thence through a pipe 14 to the c0mbus tion chamber of. the engine. The exhaust pipe 15 of the engine connects with the flue 10 at the left in Fig. '3, and the exhaust gases, after passin through the flue, escapes at the ipe 15. or convenience of casting, and to acilitate cleaning the chamber 9, the va 0- rizer is cast in two parts or sections provi ed with lugs 16 to receive securing screws 16.

At the side of the vaporizer is a pipe 17 for draining the chamber 9.

The combustible liquid is supplied to the vaporizer b the means which will now be desicribed with special reference to Figs. 1 7 an 8.

On the cam-shaft 3 is an eccentric 18 (Fig. 8) which is embraced by a yoke on an eccentrio-rod 19; and this rod is pivotally connected with a lever 20, fulcrumed at 21. This lever is coupled to the plunger 22, of a pump 23, by a link 22. It may be stated are that it is the object of this pump to deliver at each stroke a predetermined quantity of 1i uid tothe vaporizer; to draw away the liqui at the liquid inlet 11, to the vasori-zing livery at each stroke, of the predetermined .that the plunger may, at a point in its outstroke cease to draw in liquid from the 1 e 24 and take in liquid from the pipe 12 for the remainder of its outstroke, a pipe 27 connects the pi e 12with the body of the pump at aport 28, w 'ch may be at any' predetermined point above the normal inlet'and-outlet. The 0 oration then is as follows: The plunger, at t e end of its down or instroke, will be just above the normal inlet and outlet and will close the port 28 lea to the pi V e 27; and on its suction or outstro e it st take in liquid through the pipe 24. When, however,

the plunger uncovers the port 28 and continues tomove back or. up, the li uid will be drawn in at this port from. the de 'very i e 12, the influx from pi e24 ceasing. glhe suction thus created -t ouglh the pipe 12 creates a back draft throug 'the fue inlet port of the vaporizer and withdraws the oil m that pipe from the point where vaporiza tion takes place from the heat; When the plunger descends, or makes its instroke, the

'qui j .in the through the pipes 12 and 27, the amount thereof being the predetermined amount plus the amount drawn in from the delivery pipe 12. Obviously, with agiven diameter of the pump-chamber, and a given stroke of the plunger, the theoretical amount of the liquid actually delivered at each stroke of the pump will be governed by the distance the lunger travels in'making its outstroke be ore it uncovers the port 28, and this distance may be governed by disposing this port at ang point desired in the pum -body.

. igs. 9 and 10 illustrate t e means emvployed for re ulating the degree or extent of ire valve 7 which admits the opening of t vapor to the combustion chamber of the engine from the vaporizing chambers. .The

'stem 7 of this valve extends back through .the pipe 14 and out through the wall .of

same, where it is provided with a head 29,

a that bears on the outer end of a spring 30, which holds the vapor-valve closed yieldlngly.

. ing of this valve when the iston draws in a charge of vapor, a stopetent 31 is employed, this detent being pivoted or hinged at 32 and having its free end so disposed as to engage the head 29 on the valved stem. The hinge 32 is disposed at one side of the axis of movement of the stem, and the broad end of ump chamber is forced out vli uid hydrocarbon and means for creating In order to limit the extent of open erases the detent is made convex by a curve drawn from the point- 32. as a. center, so that by the detent about its swinging or moving h hinge-axis in one dlrection or another,

extent of movement of the va or-valve may be varied.- This is indicated 'y dotted lines in Fig. 9. To adjust this stop-detent withdelicacy, it is provided with a rack 33, which is engaged by a worm 34, on a stem 35, mounted rotativel in bearings cylinder and provi ed with a hand wheel 37,.

'. As before stated, in the liquid-sup device or mechanism the port 28 may 7 posed at any point desired for the cut-off by the plunger;

means of doing this is illustrated. he plunger 22 is made axially rotative in asocketpiece 22 coupled to the operat' link, the plunger having a tenon 22 whic may be secured by a set-screw'22". The lower end of the plunger is cut obliquely, at a, and by turning the plunger axially. this obliquely cut end ma bemade to open or close the port 28 earher or later, as desired.

Having thus: described my invention, I claim- 1. In a vaporizer-for internal combustion engines, a fuel port, means for feeding fuel through the port into the'vaporizer at intervals and means for creatin a back-draft through the port after the fue feed.

2. n a vaporizing apparatus for internal combustion engines, a fuel port, a fuel supply pipe communicating with said port, means: for feedin fuel through said pipe and port. at interva and means for withdrawing the fuel in the pipe from proximity to the port after thefuel feed. 7

3. In a vaporizer for internal combustion. engines, a heated vaporizing surface, a fuel port, means for feeding through the port and onto said surface at intervals, a quantity of a ack draft through said port after eac fuel feed.

4. In a vaporizing apparatus for internal combustion engines, a vaporizing chamber, a fuel inlet port therein and a fue pump having an eduction'port communicating Wlth the fuel inlet port in the vaporizing chamber, a fuel induction ort in the ump and means for relieving tl e suction ghrough said fuel induction port during part of the suction period of the pump.

5. In a vaporizmg apparatus for internal combustion engines, a vapori chamber, a fuel inlet port therein, and a fue pump having a pump chamber, a plunger moving therein, an eduction port in said pump c amber communicating with the inlet port in the vaporizing chamber, an induction port in sald pump chamber for the admission of fuel, a second induction plort in said chamber and means for opening t 36 on .the

ut-..this cut-off point may homo made variable if desired. In F' 11 one e second induction port 30 during the outward movement of the ump plunger to relieve the suction throug the fuel induction port.

6. In a vaporizing apparatus for internal combustion engines, a vaporizin chamber, a fuel inlet port therein, and a fue ump having an eduction port, a fuel feed pipe connecting the eduction ort of the pump with the. fuel inlet port of t e vaporizing chamber a fuel induction port in the pump, a secon induction port in the pump, a pipe connecting the second induction port with the said fuel feed pipe, and means for o ening the second induction port at a re etermined time during the suction period of the pump to relieve t e suction through t e fuel induction port of the pum and withdraw the fuel from proximity to t e fuel inlet port of the vaporizing chamber.

7. In a vaporizing apparatus for internal combustion engines, a va orizin chamber, a fuel inlet ort therein an a fue pump having an e uction port communicating with the fuel inlet port in the vaporizing chamber a fuel induction port in the pump and adsjustable means for relieving the suction through said fuel induction port during part of the suction period of the pump.

8. In a vaporizing apparatus for internal combustion engines, a vaporizin chamber, a fuel inlet port therein, and a fue pump having a pump chamber, a plunger moving therein, an eduction port in said pump chamber communicating with the inlet port in the vaporizing chamber, an induction port in said pump chamber for the admission of fuel,

, and a second induction port in said chamber and adjustable means for opening the second induction port during the outward movement, of the pum plun er to relieve the suction through the fiiel in uction port.

9-. In a vaporizing device for lnternal com;-

bustion engines, a vaporizing chamber, a fuel inlet port t erein, a fuel pump having a plunger, a chamber in which said Iplunger reciprocates, an eduction port in t epump chamber, a fuel feed pipe connectin the eduction port of the pump with the fue inlet port of the vaporizing chamber, a fuel induction port in the pump chamber, a second induction port opening into the side of the pump chamer in a position to be opened by the outward movement of the pump plunger, and a pipe connecting the second induction port with the said fuel feed pipe, whereby t e second induction pipe is opened at a predetermined point in the suction stroke of the pump, to relieve the suction throu h the fuel induction port and withdraw t e fuel from proximity with the fuel inlet port of the vaporizing chamber.

10. In a vaporizing device for internal combustion engines, a vaporizing chamber, a fuel inlet port therein, a fuel pump, a plunger for said pum having a beveled end, a chamber in whic the plunger reciprocates an eduction port in the pump chamber, a fuel feed pipe connecti the eduction-port of the pump with the fuel inlet port of the vaporizing chamber, a fuel induction port in the pum chamber, a second induction port opening into the side of the ump chamber in a position to be uncovered by the outward movement of the pump plunger, the pump plunger being so supported that it can be rotated to vary the point at which it uncovers the second induction port.

In witness whereof I have hereunto signed my name this 10th day of August 1904, in thdpresence of two subscribin witnesses.

' FRANCIS BRADY.

Witnesses:

HENRY Connm'r, BENJAMIN H. Hour. 

